Removable window sash



July 24,1951 HH L E 2,561,511

REMOVABLE WINDOW SASH Filed June a, 1949 1 v 2 5115515511951 2 1 INVENTOR. 1 Dav/s Ff/o/mes ATTEI RN EY Patented July 24, 1951 REMOVABLE WINDOW SASH Davis Forbes Holmes, Atlanta, Ga., assignor of one-half to Minnie Roberta Stork, Atlanta, Ga.

Application June 8, 1949, Serial N 0. 97,803

4 Claims. 1 a.

This invention relates to windows and more particularly to a sash structure constructed so astto be readily removed from a window frame, and it consists in the constructions, arrangements and combinations herein described and claimed. 2 It is a particular object of the invention to provide a sash structure which may readily. be removable from a casement frame from the inside of a dwelling, but which cannot be removed from the exterior thereof.

It is also an object ofthe invention to provide a sash of th kind described in which a wedging block is employed to retain the sash in a locked position within the frame and said bolt in addition functions to maintain the sash within the frame in such a manner as to effect an air-tight seal between the sash and frame to prevent ingress of cold air and egress of hot air during cold weather. A still further object of the invention is the provision of novel constructions of one piece channel members which may be installed in a window framing without the use of fastening means such as nails or screws and which are retained in operative position with the sliding sash by means of sliding wedging bolts, the latter being operatively engaged with elastic cushion elements carried by portions of one of the channel members, said bolts having a locking means for preventing unauthorized removal of either of the sashes.

. Additional objects, advantages and features of invention will be apparent from the following description considered in conjunction with the accompanying drawings wherein:

Figure 1 is a front elevation of a window constructed in accordance with the present invention; I

Figure 2 is an enlarged fragmentary crosssection on the line 2-2 of Figure 1;

Figure 3 is a vertical section on the line 33 of Figure 2;

Figure 4 is a fragmentary perspective viewof one of the channel members of the structure;

Figure 5 is a perspective view of one of. the wedging blocks and Figure 6 is a cross section on the line 6-6 of Figure 5 illustrating the lock mechanism of the wedging block.

Reference is first made to Figure 1 of the drawings, wherein there is shown a window frame structure l0 consisting of a pair of window sashes II and I2, the latter being vertically slidable in respective one piece channel members I3 and I3 at the sides of the window frame stiles I4 and [4' as best seen in Figure 2.

The exterior of the window is indicated at l5 while the interior thereof is represented by the reference character [6. The exterior of the frame embodies a mullion I! at respective sides suitably mortised with an upright strip l8 at one side, which has a recess I9 for reception of a laterally extended flange 20 of a channel member I3. At the opposite side of the frame an upright strip 2| is mortised into the frame and includes an inwardly directed flange 22 for sup: port of a channel 13. a a a The interior of the window frame comprises an upright stile 23 at one side having a vertical channel or recess 24 for accommodation of a flange 25 corresponding to the flange 2|] previously described, the channels or recesses and the flanges beinginalignment. At the opposite side of the frame a vertical stile 26 is provided having a rabbet 21 for reception of a lateral flange .28 of the channel l3.

Upon the interior of the window frame indicated at I6 suitable finishing strips 29 and 30 are secured by mortising or otherwise and addition,- ally secured by Allen headed screws 3 I. i

As may be best seen in Figure 4, the channels l3,comprise a single stamping of sheet metal, such as aluminum, having a pair of sash channels 3| connected by a parting strip 32 which is directed inwardly toward the stile I4. At respective sides of the channel respective flanges 20' and 25' are formed and each of these flanges is pro: vided with an elastic strip 34. The elastic strips 33 and 34 are preferably formed of synthetic rub: ber, such as neoprene which has the characteristics of maintaining elasticity and therefore admirable for effecting an airtight condition between the window frame and the window sash, as will be described.

The channel I3 is provided with a plurality of pins 35 adapted to register with respective bores 36 formed in the upright stiles l4 and interior framing 31 of the frame. The provision of the pins 35 and bores 36 insures guidance of the lateral displacement of the channel l3' as will be required in the removal of the sash l I and 12 as will be described.

Upon the window stile I4 are mounted respective pairs of transverse guide strips 38 spaced apart a distance to receive therebetween a wedging block 39, these strips 38 being spaced to slidably receive the blocks to engage the channel member I3 so as to force the sashes to the opposite channel l3 to provide an effective air-tight if 2,561,511 Lilan arm 44' or a lock 45 may pass for projecting a bolt 43 into a passage 41 formed in the stile l4f. A closure plate 48 closes the hollow end of the block and includes an opening 49 foradmission,

of a suitable key for actuating the bolt 46.

The channel I3 is identical in construction; A

with the channel [3' just described, except that the guide pins 35 are omitted.

In the present instance, I have shown the finishing strip 39 as having a pair of openings 50 aligned with respective pairs of guide strips 38 for receiving the-block 39 'so that a'bearing: contact may be had between the: adjacent side ofth'e blocl; and-the elastic strips 33 and 34 andof course, thewidth of the block issuchas to apply lateral pressure and a compressive force upon thestrips 33 and 34 and thus exertlateralpress'ure upon the sash members I I and I2-for-retaining the latter in a tight engagement with the channels l3 and I3. Initially, there is a slight clearance between the stile l4 and the channel I 3" butthis will be compensated forv by theforward taperedend 40 ofthe block during-its inward passage so that the channel [3 will be properly positioned with respect to the sash members. -We will assume that the sash members II and 12 are in their-secured positionswithinthe frame In with the blocks 39in theirlocked positions; In-order to remove the-sash from the frame both sash members are moved to their lower positions and-the locking bolts '46 are-retractedso that the blocks39- may be withdrawn from the frame Ill. The top block 39 will be the first to be removed so that the sash i2 may be lowered by gravity after which the lower. b1ock'39 may be withdrawn. The'channel member I3 is thus free-'tomove lab erally by exerting a corresponding pressure on the frames H and 12, thereby moving the sash from the channel member 13 and may then be completely removed from the frame, so-that the sash may be washed or painted. The channel 13 will be fully seated-within the frame'so that thesash maybe-readily returned to seated engagement in the channelmember l3. Theblocks 39 are then replaced in'the openings 50 and between the guide strips 38', the tapered end 4fl of the wedging blocks enablingready passage over the resilient strips 33and34. When the blocks 39-:are fully engagedintheframe, the sash H and l 2 will again be seated withinthe channels! 3 and I3 firmly held against rattling'andby virtue of'theelastic strips33/ and 314 an air-tight seal is provided. The bolts 46 are then projected into respective, bores 4-1 and the. sash are thus secured against removal. ltpwill. be seen that: with: the wedge blocks 39,in; position within therframealate eralimovementofthe sashis notpossib'le, and the sash can only be removed after removal of said blocks.

While I have shown and described a preferred form of the invention, this is by way of illustration only and I consider as my own all such modifications in construction as fairly fall within the scope of the appended claims.

What I claim:

v1". A removablewindowi sash comprising a window frame,'vertical channel-members at respective sides of the window frame, one of said channel members being fixed in said frame, the other channel; member being laterally movable, a sash positioned for vertical sliding movement in said channels; and a, wedging block movable transversely across said movable channel member exertinglateral pressure thereon in the direction I of the fixed channel member, said movable channel member having resilient means at points of contact with said wedging block.

I 2% A window frame comprising spaced: upright side stile members, a channel member in: each of the stile mem-bers, each channel having. a=.pairofverticallyextendedrecesses, the recesses-rot one channel member being in alignment: witlr'the.

said last named stile member havingspacedbores;

formed therein, pins carri'ed by said laterally movable channel and disposed in a respective bore, transverse spaced guide-bars on said last named stile member, a wedge block-slidable transe versely between each pair of guide bars and having a portion exposed exteriorl-y of the last named stile member, saidwedgeblocks=having a width to engage/the resilient strips of the laterally-move able channel member and force said channel member in the direction ofthe fixed channel member-and a sash mounted within respective aligned pairs of {recesses frictionallyheld against sliding movements. v

3'. The structure of claim 2in=which said wedge blocks: each includealock: bolt operable to prevent withdrawal of the-wedge blocks.

4. The structure of claim 2 in which thewedge block: has a tapered forward end permitting ready passage: to fully engaged position beyond the resilient strips: I

- DAVIS-1 Eo -BEs noL MEs;

REFERENCES crrEn The following references; are of record in the file of this, patent:

UNITED STATES PA'I'ENTS Howenstein- May-' 7; I935 

